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PEMERINTAH KABUPATEN GROBOGAN



DINAS PENDIDIKAN NASIONAL SMP NEGERI 1 PURWODADI RINTISAN SEKOLAH BERTARAF INTERNASIONAL (RSBI) Jalan Mayjen Sutoyo Siswomiharjo Nomor : 06 Telp. (0292) 421011 http://www.smpn1pwdd.net, e-mail : [email protected] PURWODADI 58111 THE FIRST MIDDLE SEMESTER EXAMINATION ACADEMIC YEAR 2009/2010 Subject Grade Day/date Time



: Mathematics : VII (seven) : Saturday, Okt 24, 2009 : 07.30 – 09.30 WIB



INSTRUCTION 1. Write your name, class and student number on the top right side in the availabe column of the answer sheet. 2. Check and read the test ítems carefully before you answer them. 3. Report to the observer if there is/are unclear typing, damage or incomplete test item(s). 4. It is not permitted to use dictionary, cell phone or other facilities. 5. Choose the correct answer by crossing a, b, c or d. Example : a b c d Corrected : a b c d 6. Recheck your answer carefully before you submit it to the observer. I.



Choose the right answer by crossing a, b, c or d on your answer sheet. 1. The result of -11 + 8 – (-5) is .... a. -24 b. -2 c. 2 d. 8 2. The result of -50 + [-112 + (-10)] is .... a. -182 b. -162 c. -172 d. 172 3. The order of -9, 0, 3, 2, -7, -3, 5 and 8 from the biggest to smallest is .... a. -9, -7, -3, 0, 3, 2, 3, 5, 8 c. -9, 8, -7, -3, 0, 2, 3, 5 b. -9, -3, 0, 2, 3, 5, -7, 8 d. 8, 5, 3, 2, 0, -3, -7, -9 4. There are 7 classes in a Junior High School. Each class consists of 26 students. The school received a government’s aid of Rp 4,095,000.00. That amount of money will be given to all the students in the school at the same portion. How much each student will get the money? a. Rp 16,000.00 b. Rp 17,500.00 c. Rp 18,000.00 d. 19,500.00 5. If a = -7 and b = 4, the result of (3a - 2b) + (a x 2b) is .... a. -85 b. -27 c. 27 d. 85 6. If a = 18, b = -6 and = -3, the result of



axbxc is .... bx 2c



a. 6 b. 9 c. 12 d. 18 7. Let 4 * 3 has the same meaning with (4 + 3) x(4 – 3). The value of 6 * 7 and 9 * 3 is .... a. -13 and -72 b. 13 and -72 c. 13 and -36 d. -13 and 72 8.



2( a.b) 3 8( −a ) 2 x = .... − 4a − 2ab 3



a. -2a3 b. 2a x a2 c. -2a3b3 x 2 9. If 2 = 128, the value of x – 3x is .... a. -7 b. 28 c. 33 10. The most simple form of 44 x (29 x 45)2 : (25)3 is .... a. 49 : 233 b. 414 : 23 c. 414 x 23 11. Which of the following is equivalent to 20 ? a. 2 5 b. 4 5 12. Which of the following is the equivalent of ? a. 0.38 b. 0.4 c. 0.48 13. What percent of the figure is shaded? a. b. c. d.



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d. -4ab3 d. 70 d. 49 x 233 c. 10 2



d. 20



d. 0.52



20% 25% 40% 50%



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14. Dindha has finished 35 out of 45 of his test questions. Which of the following fractions of the test does she have left? a.



2 9



7 9



b.



c.



4 5



d.



3 5



15. What is the sum of 11.006 + 34 + 0.72 rounded to the nearest tenth? a. 45.1 b. 45.7 c. 45.73 d. 46 16. Shelva has finished reading 30% of a 340-page novel. How many pages has she read? a. 102 b. 103 c. 105 d. 113



21 to a mixed number. 4



17. Change a. 4



1 2



b. 5



1 4



c. 5



18. Which of the following is equal to 0.13? a. 13 19. Only



b.



13 10



c.



1 2



13 `100



d.



3 4



13 1000



3 of the students in Cintya’s class bring their lunch to school each day. What 8



percentage of the students brings their lunch? a. 12.5% b. 24.5% c. 34.5% 20. Given the following statements: (i)



d. 5



2 2 < 7 9



(ii)



3 6 < 5 7



(iii)



The true statements are .... a. only (i) and (ii) b. only (i) and (iv)



5 4 < 8 9



c. only (ii) and (iii)



d. 37.5% (iv)



2 3 < 7 8



d. only (ii) and (iv)



4 1  1 21. The result of  5 : 2  : 2 is .... 5 2  4 1 3 2 a. 1 b. 1 c. d. 6 4 5 4 1 22. The area of rectangle is 1 cm2. If the width is 1 cm, then the length of rectangle is ... cm 5 5 1 5 2 3 a. 1 b. 1 c. 1 d. 1 3 4 2 6 23. Let we have four statements as follows : (i) 0.025 + 0.08 = 0.105 (ii) 2.305 + 0.47 = 2.775 (iii) 5.99 + 3.05 = 9.04 (iv) 4.999 + 5.111 = 10.000 Choose the following correct statements! a. Statement (i), (ii) and (iii) c. Statement (iii) and (iv) b. Statement (ii) and (iv) d. Statement (iv) x



1  1 24. The value of x that satisfies the expression  2  = 5 16  4 a. 1 b. 2 c. 3



d. 4



5



 1   1 25. (1 )3  x1  is ....  3   3 17



 1 a. 1   3



16



9



 1 b. 1   3



26. The per mille form of 12



 1 c. 1   3



8



 1 d. 1   3



1 is .... 2



a. 12.5‰ b. 125‰ c. 1,250‰ d. 12,500‰ 27. The standard form of 0.0038247 rounded to two decimal places is .... a. 3.83 x 10-2 b. 3.83 x 10-3 c. 3.82 x 10-2 d. 3.82 x 10-3 28. A spaceship traveled from the earth to the moon at a speed of 5 x 103 km per hour. If the distance from the earth to the moon is 23.05 x 108 km, how long did the spaceship take to complete the journey? a. 28.05 x 108 b. 28.05 x 105 c. 4.61 x 105 d. 4.61 x 108 29. The number operation of standard form below is correct, except : a. 3.2 x 103 + 5.4 x 102 = 3.7 x 103 c. 6.13 x 105 – 5.4 x 105 = 1.153 x 106 4 3 3 b. 1.7 x 10 – 8.2 x 10 = 8.8 x 10 d. 7.43 x 102 – 6.83 x 102 = 6 x 101 3 2 30. The value of (2 x 10 ) x (5 x 10 ) is .... a. 10 b. 1 c. 0.1 d. 0.01



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II. ESSAY



Do the problems below completely. 31. If a = -3, b = 3 and c = 4, determine : a. 2ab + 3bc b. ab2 – 4ac 32. Simplify the following divisions :



( −a ) 21 ( −a )9 a. x ( −a )5 (−a )3 b.



7 2 a +b 7 a +b x 7 a +9 b 7 a −b



33. Sixty students in Year 8 have seen all of the Star Wars films. If there are 150 students in Year 8, what percentage of them have seen all of the Star Wars films? 34. In a school of 460 students, half of them buy their lunch from the canteen, while



2 bring 5



lunch from home. The rest do not eat lunch. How many students do not eat lunch? 35. Express the following number in standard form and rounded to two decimal places. b. 67,352.49 c. 0.0038547



********* GOOD LUCK **********



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